5/16 Internal Tooth Lock Washer Black Zinc and Bake M10-1.50 It has a square shape

It has a square shape and is designed to be used with 5/16-18 machine screws

It is made of zinc-plated steel and has a split design that allows it to be easily installed and removed

They meet ASTM standards for quality and durability

This lock nut is ideal for use in a variety of applications

It is made from steel and has a zinc coating for corrosion resistance

5/16 Internal Tooth Lock Washer Black Zinc and Bake M10-1.50 It has a square shape**5 16 Internal Tooth Lock Washer Black Zinc and Bake** These 5 16" internal tooth lock washers are made of durable steel and feature a black zinc and bake finish for corrosion resistance. They are designed to prevent nuts and bolts from loosening due to vibration or movement. The internal teeth bite into the mating surface, creating a secure hold. These washers are ideal for use in automotive, industrial, and construction applications. **Features:**